usestate hook
import React, { useState } from 'react';
function Example() {
// Declare a new state variable, which we'll call "count"
const [count, setCount] = useState(0);
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}react usestate
const [count, setCount] = React.useState(0);
const [count2, setCount2] = React.useState(0);
// increments count by 1 when first button clicked
function handleClick(){
setCount(count + 1);
}
// increments count2 by 1 when second button clicked
function handleClick2(){
setCount2(count2 + 1);
}
return (
<div>
<h2>A React counter made with the useState Hook!</h2>
<p>You clicked {count} times</p>
<p>You clicked {count2} times</p>
<button onClick={handleClick}>
Click me
</button>
<button onClick={handleClick2}>
Click me2
</button>
);usestate react
import React, { useState } from 'react';
function Example() {
const [count, setCount] = useState(0);
return (
<div>
<p>You clicked {count} times</p>
<button onClick={() => setCount(count + 1)}>
Click me
</button>
</div>
);
}react useState
//initial state
const [state, setState] = useState(0)
//change state
setState(1)
//change state with prev state value
setState((prevState) => {prevState + 2}) // 3usestate in react
The initial value will be assigned only on the initial render (if it’s a function, it will be executed only on the initial render).Copyright © 2021 Codeinu
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